Table 3. Membrane transporters with differential expression along the anterior-posterior axis.

Symbol	Fold Change*	P-value	FDR	Gene Function [50]
SLC45A3	1.9	4.5 × 10-4	0.035	Associated with prostate cancer
SLC46A1	1.9	2.3 × 10-5	0.0094	H+-coupled high-affinity folate transporter and intestinal heme transporter
SLC6A9	-1.8	8.4 × 10-5	0.017	High affinity, Na+- and Cl--dependent neurotransmitter transporter
SLC9A1	-1.5	3.0 × 10-4	0.029	Na+/H+ antiporter involved in pH regulation to eliminate acids generated by active metabolism or to counter adverse environmental condition
SLC10A6	-1.6	4.1 × 10-5	0.013	Transports sulfo-conjugated steroid hormones, as well as taurolithocholic acid-3-sulfate and sulfo-conjugated pyrenes in a Na+-dependent manner
SLC45A3	-1.5	5.6 × 10-4	0.039	Associated with prostate cancer

FDR, false discovery rate.

^*Positive value indicates up-regulation; negative value indicates down-regulation.